S-10 lack of power

Tiny
PKAMIN81
  • MEMBER
  • 2010 CHEVROLET S-10
I have a 2002 s10 zr2 with 120k miles. When every the engine rpms are over 3200 there is a severe loss of power and the valves begine to chatter. I have had a k&n intake install for sometime but have had no problems untill the winter hit with -10 degree weather. There is 2 codes showing up, one for the oxgen sensor heater circuit bank2 and one for the mass air flow sensor. I have not replaced the O2 sensor yet but I did find the intake lose at the thottle body. I don't want to replace sensors that are functioning properly and I need some advice about where to start to solve this problem
Tuesday, February 27th, 2007 AT 7:04 AM

4 Replies

Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
What engine 2, 2 or 4.3 and let me know the codes, so I can direct you further

thanks, jim

oh and if you are happy with the info please leave some feedback we all donate out time here helping people for free
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Tuesday, February 27th, 2007 AT 10:33 PM
Tiny
PKAMIN81
  • MEMBER
  • 3 POSTS
It's a 4.3 liter and the 2 codes are PO101 and PO155.
PO101 is a mass air flow sensor error which maybe from the intake being lose but i'm not sure since I didn't have the codes cleared.
PO155 is HO2S Heater performance bank 2 sensor 1, I believe this is the sensor by the cat. I have had this code for a while and have notice no change in operation so I have been lazy in replacing it.
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Wednesday, February 28th, 2007 AT 6:05 AM
Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Bank 2 sensor 1 is on the right manifold, oh and those colad air intakes dont work, ive done pleny of tests, they suck hot air from the engine and make it run worse, if you have some tools, I can tell you or even show you pics of what I have come up with and it wont cost a dime

thanks, jim

oh and if you are happy with the info please leave some feedback we all donate out time here helping people for free
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Wednesday, February 28th, 2007 AT 8:15 AM
Tiny
PKAMIN81
  • MEMBER
  • 3 POSTS
I should have the tools to do just about anything short of pulling the motor. I'd like to see what you came up with. And with the new intake I did notice a HP increase, not a hugh increase but some, and I like the way it sounds :), thanks for the time you have given me so far.
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Wednesday, February 28th, 2007 AT 4:15 PM

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